missing items and gold.

I was purchasing items from the auction house 2 days ago, both bidding and buying-out items, but I noticed after buying a few items, they didn't show up in my completed auctions page (where you can transfer them to your stash), and the transaction did not show up on the completed transactions list, but the gold was spent. I still have yet to see the items, or the gold. What happened?

Also, I had some gold leftover after I bought items from the auction house 2 days ago, today I just logged back in to check if they had magically appeared (which they hadn't), and now it says I have an account balance of 0 gold. What happened?